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Abstract
针对成批数据在无线广播过程中发生丢包后的重传策略,利用网络编码技术,研究尽可能多地减少重传次数的方法.首先通过矩阵及向量的运算给出了待重传数据满足编码条件的代数表达形式,再根据关联矩阵构造相应的图,最后通过图论中的最佳匹配理论给出了一种寻找编码机会的优化算法.此算法中不但能够找出最多的两两编码机会,而且还考虑了将尽可能多的数据包编在一起的可能性,从而尽可能地减少了重传次数,实现了编码的优化,有效提高了网络带宽效率和吞吐量.
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